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    • 2. 发明授权
    • Manufacturing method of control rod for boiling water reactor
    • 沸水反应堆控制棒的制造方法
    • US6028906A
    • 2000-02-22
    • US134817
    • 1998-08-17
    • Norio KawashimaYasuyuki GotohAkira KoizumiKouichi MachidaYoshiharu KikuchiTakayoshi YasudaYoshitaka Nishino
    • Norio KawashimaYasuyuki GotohAkira KoizumiKouichi MachidaYoshiharu KikuchiTakayoshi YasudaYoshitaka Nishino
    • G21C21/18G21C7/10G21C7/113
    • G21C7/113Y02E30/31Y02E30/39
    • The present invention relates to a control rod installed in a boiling water reactor (BWR), and particularly to a control rod using metal. An object of the present invention is to provide a manufacturing method of a control rod for a boiling water reactor, having excellent corrosion resistance in high temperature water and excellent wear resistance at the time of fabrication, and in which the influence of the manufacturing process is slight. In order to achieve the above described object, the present invention provides a manufacturing method of a control rod for a boiling water reactor constructed with sheaths having a U-shaped cross section attached to each end of a tie rod having a cruciform cross section, and rod, plate or oval tube cross section metal hafnium type neutron absorber material contained inside the sheaths, in which an anodized film is provided on a surface of the neutron absorber material as a pre-process of assembly of the neutron absorber material in the structure of the control rod.
    • 本发明涉及安装在沸水反应器(BWR)中的控制棒,特别涉及一种使用金属的控制棒。 本发明的目的是提供一种用于沸水反应器的控制棒的制造方法,其在高温水中具有优异的耐腐蚀性,并且在制造时具有优异的耐磨性,并且其中制造过程的影响是 轻微。 为了实现上述目的,本发明提供了一种用于沸水反应器的控制棒的制造方法,该沸水反应器的控制棒由具有连接到具有十字形截面的拉杆的每个端部的具有U形横截面的护套构成,以及 杆,板或椭圆管截面金属铪型中子吸收体材料,其包含在护套内部,其中阳极化膜设置在中子吸收体材料的表面上,作为中子吸收体材料在结构中的组装的预处理 控制杆。
    • 5. 发明授权
    • Control rod
    • 控制杆
    • US08213563B1
    • 2012-07-03
    • US12019103
    • 2008-01-24
    • Takayuki ArakawaKoichi MachidaNorio KawashimaKazuki KobayashiYoshiharu Kikuchi
    • Takayuki ArakawaKoichi MachidaNorio KawashimaKazuki KobayashiYoshiharu Kikuchi
    • G21C7/00
    • G21C7/113G21C7/10Y02E30/39
    • A control rod includes a tie-rod, a handle mounted to an upper end portion of the tie-rod, either a connector plate or a fall velocity limiter mounted to a lower end portion of the tie-rod, sheaths having a U-shaped cross-section, welded intermittently to the tie-rod at a plurality of locations in the axial direction of the tie-rod, and having an upper end welded to the handle and a lower end welded to either the connector plate or the fall velocity limiter, and a neutron absorbing member disposed inside each of the sheaths. An upper end of a weld portion located at uppermost position in an axial direction of the tie-rod among a plurality of weld portions between the tie-rod and the sheath is disposed at a position within a range between 0.8 and 13% of total axial length Ls of the sheath below an upper end of the sheath.
    • 控制杆包括拉杆,安装到拉杆的上端部分的手柄,安装到拉杆的下端部分的连接板或下落速度限制器,具有U形的护套 横截面,在连杆的轴向方向上的多个位置处间断地焊接到拉杆,并且具有焊接到手柄的上端,以及焊接到连接器板或下落速度限制器的下端 以及设置在每个护套内的中子吸收构件。 位于拉杆和护套之间的多个焊接部分中的位于拉杆的轴向方向上的最上位置处的焊接部分的上端设置在总轴向的0.8和13%之间的范围内的位置 在鞘的上端下方的鞘的长度Ls。
    • 6. 发明申请
    • CONTROL ROD
    • 控制杆
    • US20120148012A1
    • 2012-06-14
    • US12019103
    • 2008-01-24
    • Takayuki ARAKAWAKoichi MachidaNorio KawashimaKazuki KobayashiYoshiharu Kikuchi
    • Takayuki ARAKAWAKoichi MachidaNorio KawashimaKazuki KobayashiYoshiharu Kikuchi
    • G21C7/06
    • G21C7/113G21C7/10Y02E30/39
    • A control rod includes a tie-rod, a handle mounted to an upper end portion of the tie-rod, either a connector plate or a fall velocity limiter mounted to a lower end portion of the tie-rod, sheaths having a U-shaped cross-section, welded intermittently to the tie-rod at a plurality of locations in the axial direction of the tie-rod, and having an upper end welded to the handle and a lower end welded to either the connector plate or the fall velocity limiter, and a neutron absorbing member disposed inside each of the sheaths. An upper end of a weld portion located at uppermost position in an axial direction of the tie-rod among a plurality of weld portions between the tie-rod and the sheath is disposed at a position within a range between 0.8 and 13% of total axial length Ls of the sheath below an upper end of the sheath.
    • 控制杆包括拉杆,安装到拉杆的上端部分的手柄,安装到拉杆的下端部分的连接板或下落速度限制器,具有U形的护套 横截面,在连杆的轴向方向上的多个位置处间断地焊接到拉杆,并且具有焊接到手柄的上端,以及焊接到连接器板或下落速度限制器的下端 以及设置在每个护套内的中子吸收构件。 位于拉杆和护套之间的多个焊接部分中的位于拉杆的轴向方向上的最上位置处的焊接部分的上端设置在总轴向的0.8和13%之间的范围内的位置 在鞘的上端下方的鞘的长度Ls。
    • 8. 发明授权
    • Automatic gain control circuit
    • 自动增益控制电路
    • US4916406A
    • 1990-04-10
    • US316062
    • 1989-02-27
    • Kiyoshi IchimuraKozo YasuharaNorio Kawashima
    • Kiyoshi IchimuraKozo YasuharaNorio Kawashima
    • G01J1/16G01N21/27H03G3/20
    • G01J1/16G01N21/27H03G3/20
    • An automatic gain control circuit comprising an input terminal means for receiving first and second signals, an amplifier for receiving and amplifying first and second signals and outputting a first output signal when receives the first signal and outputting a second output signal when receives the second signals, input means for receiving an operation control signal and responsive to the operation control signal for separately inputting the first and second signals to the amplifier with a predetermined interval of time, control signal generating means responsive to the second output signal of the amplifier for generating a control signal, selection means connected to the input means for supplying the second output signal of the amplifier to the control signal generating means when the second signal is fed to the amplifier and sending out the first output signals to an external circuit when the first signal is fed to the amplifier and gain control means connected to the amplifier and the control signal generating means and responsive to the control signal for regulating the gain of the amplifier, wherein the control signal generating means includes gain maintaining means for maintaining the regulated gain of the amplifier.
    • 9. 发明授权
    • Card conveying structure for card accessing devices
    • 卡访问设备的卡片传送结构
    • US5039849A
    • 1991-08-13
    • US374524
    • 1989-06-30
    • Osamu TanoNorio Kawashima
    • Osamu TanoNorio Kawashima
    • G06K13/08
    • G06K13/08
    • A card conveying structure for card accessing devices, comprising: a casing defining a card inlet and a card guideway; a drive pulley and a driven pulley supported on one side of the card guideway by a first pivot axis and a second pivot axis, respectively, defining a zero or small angle relative to a vertical line perpendicular to a major surface of a card guided by the guideway; and an endless belt passed around the two pulleys, effective diameters of the first and second pulleys being selected in relation with spacings of the pivot axes relative to the card guideway so that a linear span ofthe belt may extend along the guideway and abut the major surface of the card. By urging the linear span of the belt against the card, the card may be conveyed by the movement of the belt. Alternatively, by slanting at least one of the pulleys towards the guideway until its periphery or the belt passed around it comes into contact with the card, the movement of the belt or the pulley can be transmitted to the card. In either case, elimination of the need for pulleys having piovt axes perpendicular to the card conveying direction and in parallel with the card conveying plane leads to a substantial reduction in the vertical dimension of the card accessing device.